Mitsubishi Outlander (2013+). Manual - part 707

ETACS

CHASSIS ELECTRICAL

54A-313

PROBABLE CAUSES

• Malfunction of the ETACS-ECU

• Malfunction of the ignition switch <Vehicles with-

out KOS>

• Malfunction of the OSS-ECU <Vehicles with one 

touch start system>

• Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

STEP 1. Voltage measurement at ETACS-ECU 
connector (ACC terminal).
(1) Disconnect the connector, and measure at the 

wiring harness side.

(2) Turn the ignition switch to the "ACC" position.
(3) Check the voltage between the ETACS-ECU 

connector (ACC terminal) and body earth.

OK: System voltage

Q: Is the check result normal?

YES : 

Go to Step 5.

NO <vehicles with one touch start system> : 

Go to 

Step 2.

NO <vehicles without one touch start system> : 

Go to Step 3.

STEP 2. Check the M.U.T.-III Diagnosis code for 
other systems
Check that the OSS-ECU set a diagnosis code.

Q: Is the diagnosis code set?

YES : 

Diagnose the OSS-ECU. Refer to GROUP 

42B, Troubleshooting 

P.54A-39

.

NO : 

Go to Step 4.

STEP 3. Ignition switch check
Check the ignition switch. Refer to 

P.54A-19

.

Q: Is the check result normal?

YES : 

Go to Step 4.

NO : 

Troubleshoot the ignition switch. Refer to 
Inspection Procedure 2 "Malfunction of the 
ignition switch power supply system" 

P.54A-14

.

STEP 4. Check of short to power supply, short to 
earth, and open circuit in ACC line between 
ignition switch (ACC) <Vehicles without KOS> or 
OSS-ECU (ACC) <Vehicles with one touch start 
system> and ETACS-ECU connector.

Q: Is the check result normal?

YES : 

Go to Step 5.

NO : 

Repair the connector(s) or wiring harness.

STEP 5. M.U.T.-III data list
Check the input signals from the ignition switch 
(ACC).

•

Item No.

Item name

Normal 
condition

Item 288

ACC switch

ON

Turn the ignition switch to the ACC position.

OK: Normal condition is displayed.

Q: Is the check result normal?

YES : 

The trouble can be an intermittent 

malfunction (Refer to GROUP 00 

− How to 

use Troubleshooting/inspection Service 
Points 

− How to Cope with Intermittent 

Malfunction ).

NO : 

Replace the ETACS-ECU.

Inspection Procedure 2: The ignition switch (IG1) signal is not received.

CAUTION

• Before replacing the ECU, ensure that the 

power supply circuit, the earth circuit and the 
communication circuit are normal.

• When the ETACS-ECU of vehicles without 

KOS is replaced, the encrypted code of the 
ignition key needs to be registered to the 
ETACS-ECU. (If the encrypted code is not reg-
istered, the engine cannot be started. Regis-
ter the encrypted code as described in 
Immobilizer System 

− How to Register Key ID 

P.54A-33

.)

COMMENTS ON TROUBLE SYMPTOM

If there is an error to the input signal (IG1) from the 
ignition switch <Vehicles without KOS> or OSS-ECU 
<Vehicles with one touch start system>, or if the IG 
relay in ETACS-ECU does not function normally, the 
ignition switch (IG1) signal is no longer output to the 
communication line.

PROBABLE CAUSES

• Malfunction of the ETACS-ECU

• Malfunction of the ignition switch <Vehicles with-

out KOS>

• Malfunction of the OSS-ECU <Vehicles with one 

touch start system>

ETACS

CHASSIS ELECTRICAL

54A-314

• Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

STEP 1. Voltage measurement at ETACS-ECU 
connector (IG1 terminal)
(1) Disconnect the connector, and measure at the 

wiring harness side.

(2) Turn the ignition switch to the "ON" position.
(3) Check the voltage between the ETACS-ECU 

connector (IG1 terminal) and body earth.

OK: System voltage

Q: Is the check result normal?

YES : 

Go to Step 5.

NO <vehicles with one touch start system> : 

Go to 

Step 2.

NO <vehicles without one touch start system> : 

Go to Step 3.

STEP 2. Check the M.U.T.-III Diagnosis code for 
other systems
Check that the OSS-ECU set a diagnosis code.

Q: Is the diagnosis code set?

YES : 

Diagnose the OSS-ECU. Refer to GROUP 

42B, Troubleshooting 

P.54A-39

.

NO : 

Go to Step 4.

STEP 3. Ignition switch check
Check the ignition switch. Refer to 

P.54A-19

.

Q: Is the check result normal?

YES : 

Go to Step 4.

NO : 

Troubleshoot the ignition switch. Refer to 
Inspection Procedure 2 "Malfunction of the 
ignition switch power supply system" 

P.54A-14

.

STEP 4. Check of short to power supply, short to 
earth, and open circuit in IG1 line between 
ignition switch (IG1) <Vehicles without KOS> or 
OSS-ECU (IG1) <Vehicles with one touch start 
system> and ETACS-ECU connector.

Q: Is the check result normal?

YES : 

Go to Step 5.

NO : 

Repair the connector(s) or wiring harness.

STEP 5. M.U.T.-III data list
Check the input signal from the ignition switch (IG1).

•

Item No.

Item name

Normal 
condition

Item 254

IG voltage

System voltage

Turn the ignition switch to the "ON" position.

OK: Normal condition is displayed.

Q: Is the check result normal?

YES : 

The trouble can be an intermittent 

malfunction (Refer to GROUP 00 

− How to 

use Troubleshooting/inspection Service 
Points 

− How to Cope with Intermittent 

Malfunction ).

NO : 

Replace the ETACS-ECU.

Inspection Procedure 3: The key reminder switch signal is not received. <Vehicles without KOS>

CAUTION

• Before replacing the ECU, ensure that the 

power supply circuit, the earth circuit and the 
communication circuit are normal.

• When the ETACS-ECU of vehicles without 

KOS is replaced, the encrypted code of the 
ignition key needs to be registered to the 
ETACS-ECU. (If the encrypted code is not reg-
istered, the engine cannot be started. Regis-
ter the encrypted code as described in 
Immobilizer System 

− How to Register Key ID 

P.54A-33

.)

COMMENTS ON TROUBLE SYMPTOM

The key reminder switch input signal is used for the 
operation judgement of the functions below. If the 
signal is abnormal, these functions will not work.

• Ignition key reminder function

• Central door locking

• Keyless entry system

• Ignition key cylinder illumination lamp

• Room lamp

PROBABLE CAUSES

• Malfunction of the key reminder switch

• Malfunction of the ETACS-ECU

• Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

STEP 1. Check the key reminder switch.
Refer to 

P.54A-20

.

Q: Is the check result normal?

ETACS

CHASSIS ELECTRICAL

54A-315

YES : 

Go to Step 2.

NO : 

Replace the key reminder switch.

STEP 2. Resistance measurement at key 
reminder switch connector (earth terminal)
(1) Disconnect the connector, and measure at the 

wiring harness side.

(2) Measure the resistance between the key 

reminder switch connector (earth terminal) and 
body earth.

OK: Continuity exists (2 

Ω or less)

Q: Is the check result normal?

YES : 

Go to Step 4.

NO : 

Go to Step 3.

STEP 3. Check of open circuit in earth line 
between key reminder switch connector and the 
body earth

Q: Is the check result normal?

YES : 

Intermittent malfunction is suspected (Refer 

to GROUP 00 

− How to Use 

Troubleshooting/Inspection Service Points 

− 

How to Cope with Intermittent Malfunction ).

NO : 

Repair the connector(s) or wiring harness.

STEP 4. Check of short to power supply, short to 
earth, and open circuit in HL1+ line between 
ETACS-ECU connector and key reminder switch 
connector

Q: Is the check result normal?

YES : 

Go to Step 5.

NO : 

Repair the connector(s) or wiring harness.

STEP 5. M.U.T.-III data list
Check the input signals from the key reminder 
switch.

•

Item No.

Item name

Normal 
condition

Item 264

Handle lock switch

Key in

Ignition switch: "LOCK" (OFF) (key inserted)

OK: Normal condition is displayed.

Q: Is the check result normal?

YES : 

The trouble can be an intermittent 

malfunction (Refer to GROUP 00 

− How to 

use Troubleshooting/inspection Service 
Points 

− How to Cope with Intermittent 

Malfunction ).

NO : 

Replace the ETACS-ECU.

Inspection Procedure 4: The front door lock actuator (driver’s side) signal is not received.

CAUTION

• Before replacing the ECU, ensure that the 

power supply circuit, the earth circuit and the 
communication circuit are normal.

• When the ETACS-ECU of vehicles without 

KOS is replaced, the encrypted code of the 
ignition key needs to be registered to the 
ETACS-ECU. (If the encrypted code is not reg-
istered, the engine cannot be started. Regis-
ter the encrypted code as described in 
Immobilizer System 

− How to Register Key ID 

P.54A-33

.)

COMMENTS ON TROUBLE SYMPTOM

The front door lock actuator (driver’s side) input sig-
nal is used for the operation judgement of the func-
tions below. If the signal is abnormal, these functions 
will not work normally.

• Key reminder function

• Central door locking

• KOS

• Keyless entry system

• Room lamp

PROBABLE CAUSES

• Malfunction of the front door lock actuator 

(driver’s side)

• Malfunction of the ETACS-ECU

• Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

STEP 1. Front door lock actuator (driver’s side) 
check
Refer to GROUP 42A 

− Door .

Q: Is the check result normal?

YES : 

Go to Step 2.

NO : 

Replace the front door lock actuator 
(driver’s side).

STEP 2. Resistance measurement at front door 
lock actuator (LH) connector (earth terminal)
(1) Disconnect the connector, and measure at the 

wiring harness side.

(2) Measure the resistance between the door lock 

actuator (LH) connector (earth terminal) and body 

ETACS

CHASSIS ELECTRICAL

54A-316

earth.

OK: Continuity exists (2 

Ω or less)

Q: Is the check result normal?

YES : 

Go to Step 4.

NO : 

Go to Step 3.

STEP 3. Check of open circuit in earth line 
between front door lock actuator (LH) connector 
and body earth

Q: Is the check result normal?

YES : 

Intermittent malfunction is suspected (Refer 

to GROUP 00 

− How to Use 

Troubleshooting/Inspection Service Points 

− 

How to Cope with Intermittent Malfunction ).

NO : 

Repair the connector(s) or wiring harness.

STEP 4. Check of short to power supply, short to 
earth, and open circuit in DDUK line between 
ETACS-ECU connector and front door lock 
actuator (LH) connector

Q: Is the check result normal?

YES : 

Go to Step 5.

NO : 

Repair the connector(s) or wiring harness.

STEP 5. M.U.T.-III data list
Change the status of driver's door from unlocked to 
locked.

Item No.

Item name

Normal 
condition

Item 271

Dr door unlock 
switch

Unlock 

→ 

Lock 

OK: Normal condition is displayed.

Q: Is the check result normal?

YES : 

The trouble can be an intermittent 

malfunction (Refer to GROUP 00 

− How to 

use Troubleshooting/inspection Service 
Points 

− How to Cope with Intermittent 

Malfunction ).

NO : 

Replace the ETACS-ECU.

Inspection Procedure 5: The front door switch (driver’s side) signal is not received.

CAUTION

• Before replacing the ECU, ensure that the 

power supply circuit, the earth circuit and the 
communication circuit are normal.

• When the ETACS-ECU of vehicles without 

KOS is replaced, the encrypted code of the 
ignition key needs to be registered to the 
ETACS-ECU. (If the encrypted code is not reg-
istered, the engine cannot be started. Regis-
ter the encrypted code as described in 
Immobilizer System 

− How to Register Key ID 

P.54A-33

.)

COMMENTS ON TROUBLE SYMPTOM

If there is an error to the front door switch (driver’s 
side) input signal, the door switch (driver’s side) sig-
nal is no longer output to the communication line.

PROBABLE CAUSES

• Malfunction of front door switch (LH)

• Malfunction of the ETACS-ECU

• Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

STEP 1. Check the installation condition.
Check that the front door switch (driver’s side) is 
installed to the body correctly.

Q: Is the check result normal?

YES : 

Go to Step 2.

NO : 

Correct the installation condition.

STEP 2. Front door switch (driver’s side) check
Refer to GROUP 42A 

− Door .

Q: Is the check result normal?

YES : 

Go to Step 3.

NO : 

Replace the front door switch (driver’s side).

STEP 3. Check of short to power supply, short to 
earth, and open circuit in DDR line between 
ETACS-ECU connector and front door switch 
(LH) connector

Q: Is the check result normal?

YES : 

Go to Step 4.

NO : 

Repair the connector(s) or wiring harness.